This links shows without doubt the benefits of having a GPS security system on board.

http://www.youtube.com/watch?v=qMGRqw0Upt8&feature=share&list=UUC_zqGCI_llSYrNcArk5gsg

The Spot Hug and other tracking devices are available atwww.yachttrackers.com

There is no reason why your should not know where your boat is 24/7